A downloadable game

Test your puzzling skills with this 15 level game, built by one person working alone over 48 hours for the GMTK 2021 Games Jam.

Controls are all on the keyboard:

  • Cursors/WASD - Move selected alien
  • Space/tab - Cycle through selectable aliens (adding shift cycles in reverse)
  • R - Reset level
  • M - Mute music
  • <, > - Cycle through levels
  • Esc - Quit game


  • Game design, code, gfx, sfx: Chris Underwood
  • Playtesting: Sam Vickery
  • Shapes: Freya "Acegikmo" Holmér
  • Music is from an old game of mine, originally licensed via SoundDogs


Alien Nursery Evacuation Plan (GMTK 2021) v1.1.zip 35 MB

Install instructions

Extract the zip then run "Alien Nursery Evacuation Plan (GMTK 2021).exe"


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Cool! Will have to download this when I find some space on my desk for my PC. Can you export for WebGL? I could play it on my Mac then.