Panic Playdate

Runs real compiled-C Playdate games on an in-browser ARM Cortex-M7 core with the Playdate C API reimplemented in JavaScript (High-Level Emulation). The default is "Crank Orbit", a self-authored CC0 game compiled with clang for thumbv7em: turn the CRANK with your MOUSE WHEEL (or the on-screen dial) to speed the orbiting comet and swing the hand, move the square with the arrow keys, and press Z/X (B/A) for notes. A looping melody plays the moment you press Sound. Click the screen first so it captures the keyboard. Open the debugger, or add ?debug, to single-STEP real Thumb-2 instructions, set PC breakpoints and write watchpoints, and read the ARM registers (r0-r15, xPSR, s0-s31) and the real memory map (FLASH, SRAM, the 1-bit framebuffer, the FMC heap) live.

Runs real Playdate Lua games on an in-browser Lua VM (fengari) with the playdate.* SDK reimplemented in JavaScript. The default is "Crankit", a self-authored crank demo: turn the CRANK with your MOUSE WHEEL (or the on-screen dial) to spin the hand and bend the melody, press the Sound button to hear it, and use the arrow keys + Z/X (B/A) for the d-pad and buttons. Pick another game (Tennis is a crank-controlled Pong, Snake a grid game, Hello a movement demo) from the list. Click the screen first so it captures the keyboard. Open the debugger, or add ?debug, to single-STEP the Lua one source line at a time, set breakpoints on Lua lines, and watch the call stack, locals and crank/button state live.

Runs real compiled-C Playdate games on an in-browser ARM Cortex-M7 core with the Playdate C API reimplemented in JavaScript (High-Level Emulation). The default is "Crank Orbit", a self-authored CC0 game compiled with clang for thumbv7em: turn the CRANK with your MOUSE WHEEL (or the on-screen dial) to speed the orbiting comet and swing the hand, move the square with the arrow keys, and press Z/X (B/A) for notes. A looping melody plays the moment you press Sound. Click the screen first so it captures the keyboard. Open the debugger, or add ?debug, to single-STEP real Thumb-2 instructions, set PC breakpoints and write watchpoints, and read the ARM registers (r0-r15, xPSR, s0-s31) and the real memory map (FLASH, SRAM, the 1-bit framebuffer, the FMC heap) live.

Runs real Playdate Lua games on an in-browser Lua VM (fengari) with the playdate.* SDK reimplemented in JavaScript. The default is "Crankit", a self-authored crank demo: turn the CRANK with your MOUSE WHEEL (or the on-screen dial) to spin the hand and bend the melody, press the Sound button to hear it, and use the arrow keys + Z/X (B/A) for the d-pad and buttons. Pick another game (Tennis is a crank-controlled Pong, Snake a grid game, Hello a movement demo) from the list. Click the screen first so it captures the keyboard. Open the debugger, or add ?debug, to single-STEP the Lua one source line at a time, set breakpoints on Lua lines, and watch the call stack, locals and crank/button state live.

Runs real compiled-C Playdate games on an in-browser ARM Cortex-M7 core with the Playdate C API reimplemented in JavaScript (High-Level Emulation). The default is "Crank Orbit", a self-authored CC0 game compiled with clang for thumbv7em: turn the CRANK with your MOUSE WHEEL (or the on-screen dial) to speed the orbiting comet and swing the hand, move the square with the arrow keys, and press Z/X (B/A) for notes. A looping melody plays the moment you press Sound. Click the screen first so it captures the keyboard. Open the debugger, or add ?debug, to single-STEP real Thumb-2 instructions, set PC breakpoints and write watchpoints, and read the ARM registers (r0-r15, xPSR, s0-s31) and the real memory map (FLASH, SRAM, the 1-bit framebuffer, the FMC heap) live.

Runs real Playdate Lua games on an in-browser Lua VM (fengari) with the playdate.* SDK reimplemented in JavaScript. The default is "Crankit", a self-authored crank demo: turn the CRANK with your MOUSE WHEEL (or the on-screen dial) to spin the hand and bend the melody, press the Sound button to hear it, and use the arrow keys + Z/X (B/A) for the d-pad and buttons. Pick another game (Tennis is a crank-controlled Pong, Snake a grid game, Hello a movement demo) from the list. Click the screen first so it captures the keyboard. Open the debugger, or add ?debug, to single-STEP the Lua one source line at a time, set breakpoints on Lua lines, and watch the call stack, locals and crank/button state live.

Runs real Playdate Lua games on an in-browser Lua VM (fengari) with the playdate.* SDK reimplemented in JavaScript. The default is "Crankit", a self-authored crank demo: turn the CRANK with your MOUSE WHEEL (or the on-screen dial) to spin the hand and bend the melody, press the Sound button to hear it, and use the arrow keys + Z/X (B/A) for the d-pad and buttons. Pick another game (Tennis is a crank-controlled Pong, Snake a grid game, Hello a movement demo) from the list. Click the screen first so it captures the keyboard. Open the debugger, or add ?debug, to single-STEP the Lua one source line at a time, set breakpoints on Lua lines, and watch the call stack, locals and crank/button state live.