diff --git a/build.zig.zon b/build.zig.zon
index c146c9d..bb26f1d 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -16,8 +16,8 @@
     // internet connectivity.
     .dependencies = .{
         .seizer = .{
-            .url = "https://github.com/leroycep/seizer/archive/8fbc262657f505a11505d12eb277ff5736821769.tar.gz",
-            .hash = "1220b6df5a68c8c918d92befcfbe379010c7ddbe25fded0a2e103c4514012ad48b97",
+            .url = "https://github.com/leroycep/seizer/archive/d7213d4951e4da187123a29164ac487c6408b53b.tar.gz",
+            .hash = "1220f48f244eb92f096efd8ce2b7db41b35b039eb33ae5a7509a6003ad2fb7f9f271",
         },
     },
     .paths = .{
diff --git a/src/main.zig b/src/main.zig
index 101a069..59c516f 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -2,9 +2,7 @@ pub const main = seizer.main;
 
 const APPNAME = "seizer-solitaire";
 
-var gpa: std.mem.Allocator = undefined;
 var prng: std.rand.DefaultPrng = undefined;
-var context_global: *seizer.Context = undefined;
 var window_global: seizer.Window = undefined;
 var canvas: seizer.Canvas = undefined;
 var card_tilemap: ?DeckSprites = null;
@@ -37,26 +35,23 @@ var win_count: ?u32 = null;
 var win_triggered: bool = false;
 var frame_count: u64 = 0;
 
-pub fn init(context: *seizer.Context) !void {
-    context_global = context;
-
-    gpa = context.gpa;
+pub fn init() !void {
     prng = std.rand.DefaultPrng.init(@bitCast(std.time.timestamp()));
 
-    window_global = try context.createWindow(.{
+    window_global = try seizer.platform.createWindow(.{
         .title = "Seizer Solitaire",
         .on_render = render,
         .on_destroy = destroy,
     });
 
-    canvas = try seizer.Canvas.init(context.gpa, .{});
+    canvas = try seizer.Canvas.init(seizer.platform.allocator(), .{});
     errdefer canvas.deinit();
 
-    card_tilemap = try assets.loadSolitaireCards(context.gpa);
+    card_tilemap = try assets.loadSolitaireCards(seizer.platform.allocator());
 
     try resetGame();
 
-    try context.addButtonInput(.{
+    try seizer.platform.addButtonInput(.{
         .title = "move_up",
         .on_event = moveUp,
         .default_bindings = &.{
@@ -64,7 +59,7 @@ pub fn init(context: *seizer.Context) !void {
             .{ .keyboard = .up },
         },
     });
-    try context.addButtonInput(.{
+    try seizer.platform.addButtonInput(.{
         .title = "move_down",
         .on_event = moveDown,
         .default_bindings = &.{
@@ -72,7 +67,7 @@ pub fn init(context: *seizer.Context) !void {
             .{ .keyboard = .down },
         },
     });
-    try context.addButtonInput(.{
+    try seizer.platform.addButtonInput(.{
         .title = "move_left",
         .on_event = moveLeft,
         .default_bindings = &.{
@@ -80,7 +75,7 @@ pub fn init(context: *seizer.Context) !void {
             .{ .keyboard = .left },
         },
     });
-    try context.addButtonInput(.{
+    try seizer.platform.addButtonInput(.{
         .title = "move_right",
         .on_event = moveRight,
         .default_bindings = &.{
@@ -88,7 +83,7 @@ pub fn init(context: *seizer.Context) !void {
             .{ .keyboard = .right },
         },
     });
-    try context.addButtonInput(.{
+    try seizer.platform.addButtonInput(.{
         .title = "select_or_place",
         .on_event = doSelectOrPlace,
         .default_bindings = &.{
@@ -96,7 +91,7 @@ pub fn init(context: *seizer.Context) !void {
             .{ .keyboard = .z },
         },
     });
-    try context.addButtonInput(.{
+    try seizer.platform.addButtonInput(.{
         .title = "deselect",
         .on_event = deselect,
         .default_bindings = &.{
@@ -104,7 +99,7 @@ pub fn init(context: *seizer.Context) !void {
             .{ .keyboard = .x },
         },
     });
-    try context.addButtonInput(.{
+    try seizer.platform.addButtonInput(.{
         .title = "toggle_menu",
         .on_event = toggleMenu,
         .default_bindings = &.{
@@ -112,7 +107,7 @@ pub fn init(context: *seizer.Context) !void {
             .{ .keyboard = .esc },
         },
     });
-    try context.addButtonInput(.{
+    try seizer.platform.addButtonInput(.{
         .title = "undo",
         .on_event = undo,
         .default_bindings = &.{
@@ -121,8 +116,8 @@ pub fn init(context: *seizer.Context) !void {
         },
     });
 
-    const read_buffer = try gpa.alloc(u8, @sizeOf(u32));
-    context.readFile(.{
+    const read_buffer = try seizer.platform.allocator().alloc(u8, @sizeOf(u32));
+    seizer.platform.readFile(.{
         .appname = APPNAME,
         .path = "win_count.bin",
         .buffer = read_buffer,
@@ -131,9 +126,9 @@ pub fn init(context: *seizer.Context) !void {
     });
 }
 
-fn onWinCountRead(userdata: ?*anyopaque, result: seizer.Context.FileError![]const u8) void {
+fn onWinCountRead(userdata: ?*anyopaque, result: seizer.Platform.FileError![]const u8) void {
     const buffer: *[4]u8 = @ptrCast(userdata);
-    defer gpa.free(buffer);
+    defer seizer.platform.allocator().free(buffer);
 
     if (result) |bytes| {
         if (bytes.len >= @sizeOf(u32)) {
@@ -142,15 +137,15 @@ fn onWinCountRead(userdata: ?*anyopaque, result: seizer.Context.FileError![]cons
     } else |_| {}
 }
 
-fn onWinCountWritten(userdata: ?*anyopaque, result: seizer.Context.FileError!void) void {
+fn onWinCountWritten(userdata: ?*anyopaque, result: seizer.Platform.FileError!void) void {
     const buffer: *u32 = @ptrCast(@alignCast(userdata));
-    defer gpa.destroy(buffer);
+    defer seizer.platform.allocator().destroy(buffer);
     _ = result catch {};
 }
 
 fn resetGame() !void {
     resetHistory();
-    draw_pile.deinit(gpa);
+    draw_pile.deinit(seizer.platform.allocator());
     draw_pile_exhausted = false;
     drawn_cards.shrinkRetainingCapacity(0);
     for (&stacks) |*stack| {
@@ -168,13 +163,13 @@ fn resetGame() !void {
     selected_deck = null;
     selected_card = 0;
 
-    draw_pile = std.ArrayListUnmanaged(Card).fromOwnedSlice(try makeStandardDeck(gpa));
+    draw_pile = std.ArrayListUnmanaged(Card).fromOwnedSlice(try makeStandardDeck(seizer.platform.allocator()));
     prng.random().shuffle(Card, draw_pile.items);
 
     for (&stacks, 0..) |*stack, i| {
         for (0..i + 1) |_| {
             const drawn_card = draw_pile.pop();
-            try stack.append(gpa, drawn_card);
+            try stack.append(seizer.platform.allocator(), drawn_card);
         }
     }
 
@@ -193,19 +188,19 @@ fn destroy(window: seizer.Window) void {
     for (history.items) |*snapshot| {
         snapshot.deinit();
     }
-    history.deinit(gpa);
+    history.deinit(seizer.platform.allocator());
 
-    draw_pile.deinit(gpa);
-    drawn_cards.deinit(gpa);
+    draw_pile.deinit(seizer.platform.allocator());
+    drawn_cards.deinit(seizer.platform.allocator());
     for (&stacks) |*stack| {
-        stack.deinit(gpa);
+        stack.deinit(seizer.platform.allocator());
     }
     for (&foundations) |*foundation| {
-        foundation.deinit(gpa);
+        foundation.deinit(seizer.platform.allocator());
     }
 
     if (card_tilemap) |*ct| {
-        ct.deinit(gpa);
+        ct.deinit(seizer.platform.allocator());
         card_tilemap = null;
     }
     canvas.deinit();
@@ -215,9 +210,9 @@ fn render(window: seizer.Window) !void {
     if (haveWon() and !win_triggered and win_count != null) {
         win_count.? += 1;
 
-        const win_count_write_buffer = try gpa.create(u32);
+        const win_count_write_buffer = try seizer.platform.allocator().create(u32);
         std.mem.writeInt(u32, std.mem.asBytes(win_count_write_buffer), win_count.?, .little);
-        context_global.writeFile(.{
+        seizer.platform.writeFile(.{
             .appname = APPNAME,
             .path = "win_count.bin",
             .data = std.mem.asBytes(win_count_write_buffer),
@@ -505,7 +500,7 @@ pub fn doSelectOrPlace(pressed: bool) !void {
     if (selected_deck == null) {
         if (hovered_deck == &draw_pile and !draw_pile_exhausted) {
             resetHistory();
-            drawn_cards.ensureUnusedCapacity(gpa, 3) catch return;
+            drawn_cards.ensureUnusedCapacity(seizer.platform.allocator(), 3) catch return;
             for (0..3) |_| {
                 if (draw_pile.popOrNull()) |card| drawn_cards.appendAssumeCapacity(card);
             }
@@ -543,7 +538,7 @@ pub fn doSelectOrPlace(pressed: bool) !void {
                 const suit_matches = !empty and foundation.items[foundation.items.len - 1].suit == selected_deck.?.items[selected_deck.?.items.len - 1].suit;
                 const is_next_rank = !empty and foundation.items[foundation.items.len - 1].rank + 1 == selected_deck.?.items[selected_deck.?.items.len - 1].rank;
                 if ((empty and ace) or (suit_matches and is_next_rank)) {
-                    foundation.ensureUnusedCapacity(gpa, 1) catch continue;
+                    foundation.ensureUnusedCapacity(seizer.platform.allocator(), 1) catch continue;
                     foundation.appendAssumeCapacity(selected_deck.?.pop());
 
                     hovered_card = if (hovered_deck.? == &drawn_cards)
@@ -560,7 +555,7 @@ pub fn doSelectOrPlace(pressed: bool) !void {
         }
 
         if (cards_moved) {
-            try history.append(gpa, snapshot);
+            try history.append(seizer.platform.allocator(), snapshot);
         } else {
             snapshot.deinit();
         }
@@ -578,7 +573,7 @@ pub fn doSelectOrPlace(pressed: bool) !void {
             if (hovered.items.len == 0) {
                 for (stacks[0..]) |*stack| {
                     if (hovered != stack) continue;
-                    hovered.ensureUnusedCapacity(gpa, selected_substack.len) catch break :move_from_selected_to_hovered;
+                    hovered.ensureUnusedCapacity(seizer.platform.allocator(), selected_substack.len) catch break :move_from_selected_to_hovered;
                     hovered.appendSliceAssumeCapacity(selected_substack);
                     selected.shrinkRetainingCapacity(selected.items.len - selected_substack.len);
                     hovered_card = indexOfTopOfStack(hovered_deck.?.items);
@@ -588,7 +583,7 @@ pub fn doSelectOrPlace(pressed: bool) !void {
 
                 if (selected_substack.len == 1) {
                     if (draw_pile_exhausted and hovered == &draw_pile and draw_pile.items.len == 0) {
-                        hovered.ensureUnusedCapacity(gpa, 1) catch break :move_from_selected_to_hovered;
+                        hovered.ensureUnusedCapacity(seizer.platform.allocator(), 1) catch break :move_from_selected_to_hovered;
                         hovered.appendAssumeCapacity(selected_deck.?.pop());
                         hovered_card = indexOfTopOfStack(hovered_deck.?.items);
                         cards_moved = true;
@@ -600,7 +595,7 @@ pub fn doSelectOrPlace(pressed: bool) !void {
                         const suit_matches = !empty and foundation.items[foundation.items.len - 1].suit == selected_deck.?.items[selected_deck.?.items.len - 1].suit;
                         const is_next_rank = !empty and foundation.items[foundation.items.len - 1].rank + 1 == selected_deck.?.items[selected_deck.?.items.len - 1].rank;
                         if ((empty and ace) or (suit_matches and is_next_rank)) {
-                            foundation.ensureUnusedCapacity(gpa, 1) catch continue;
+                            foundation.ensureUnusedCapacity(seizer.platform.allocator(), 1) catch continue;
                             foundation.appendAssumeCapacity(selected_deck.?.pop());
                             hovered_card = indexOfTopOfStack(hovered_deck.?.items);
                             cards_moved = true;
@@ -617,14 +612,14 @@ pub fn doSelectOrPlace(pressed: bool) !void {
             {
                 break :move_from_selected_to_hovered;
             }
-            hovered.ensureUnusedCapacity(gpa, selected_substack.len) catch break :move_from_selected_to_hovered;
+            hovered.ensureUnusedCapacity(seizer.platform.allocator(), selected_substack.len) catch break :move_from_selected_to_hovered;
             hovered.appendSliceAssumeCapacity(selected_substack);
             selected.shrinkRetainingCapacity(selected.items.len - selected_substack.len);
             hovered_card = indexOfTopOfStack(hovered_deck.?.items);
             cards_moved = true;
         }
         if (cards_moved) {
-            try history.append(gpa, snapshot);
+            try history.append(seizer.platform.allocator(), snapshot);
         } else {
             snapshot.deinit();
         }
@@ -826,19 +821,19 @@ const Snapshot = struct {
     pub fn initFromCurrentGlobalState() !Snapshot {
         const snapshot_selected_deck = selected_deck orelse return error.InvalidSelectionForSnapshot;
 
-        const snapshot_draw_pile = try gpa.dupe(Card, draw_pile.items);
-        errdefer gpa.free(snapshot_draw_pile);
-        const snapshot_drawn_cards = try gpa.dupe(Card, drawn_cards.items);
-        errdefer gpa.free(snapshot_drawn_cards);
+        const snapshot_draw_pile = try seizer.platform.allocator().dupe(Card, draw_pile.items);
+        errdefer seizer.platform.allocator().free(snapshot_draw_pile);
+        const snapshot_drawn_cards = try seizer.platform.allocator().dupe(Card, drawn_cards.items);
+        errdefer seizer.platform.allocator().free(snapshot_drawn_cards);
 
         var snapshot_stacks: [7][]Card = undefined;
         for (&snapshot_stacks, &stacks) |*snapshot_stack, stack| {
-            snapshot_stack.* = try gpa.dupe(Card, stack.items);
+            snapshot_stack.* = try seizer.platform.allocator().dupe(Card, stack.items);
         }
 
         var snapshot_foundations: [4][]Card = undefined;
         for (&snapshot_foundations, &foundations) |*snapshot_foundation, foundation| {
-            snapshot_foundation.* = try gpa.dupe(Card, foundation.items);
+            snapshot_foundation.* = try seizer.platform.allocator().dupe(Card, foundation.items);
         }
 
         return Snapshot{
@@ -853,25 +848,25 @@ const Snapshot = struct {
     }
 
     pub fn deinit(snapshot: *@This()) void {
-        gpa.free(snapshot.draw_pile);
-        gpa.free(snapshot.drawn_cards);
+        seizer.platform.allocator().free(snapshot.draw_pile);
+        seizer.platform.allocator().free(snapshot.drawn_cards);
         for (snapshot.stacks) |stack| {
-            gpa.free(stack);
+            seizer.platform.allocator().free(stack);
         }
         for (snapshot.foundations) |foundation| {
-            gpa.free(foundation);
+            seizer.platform.allocator().free(foundation);
         }
     }
 
     pub fn restore(snapshot: @This()) !void {
         // ensure there is enough space for all the cards
-        try draw_pile.ensureTotalCapacity(gpa, snapshot.draw_pile.len);
-        try drawn_cards.ensureTotalCapacity(gpa, snapshot.drawn_cards.len);
+        try draw_pile.ensureTotalCapacity(seizer.platform.allocator(), snapshot.draw_pile.len);
+        try drawn_cards.ensureTotalCapacity(seizer.platform.allocator(), snapshot.drawn_cards.len);
         for (&snapshot.stacks, &stacks) |snapshot_stack, *stack| {
-            try stack.ensureTotalCapacity(gpa, snapshot_stack.len);
+            try stack.ensureTotalCapacity(seizer.platform.allocator(), snapshot_stack.len);
         }
         for (&snapshot.foundations, &foundations) |snapshot_foundation, *foundation| {
-            try foundation.ensureTotalCapacity(gpa, snapshot_foundation.len);
+            try foundation.ensureTotalCapacity(seizer.platform.allocator(), snapshot_foundation.len);
         }
 
         // reset the state