A downloadable game for Windows, macOS, and Linux

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"I'd play this for a couple of minutes"

Reaction is a physics puzzler where geometry falls from the sky.

 Some pieces tumble, some pieces budge, while one or two pieces rain from above. That’s how things go during an average game of Reaction. You swing your paddle frantically in order to get the pieces into the openings on the sides, gaining some precious little time before the play area inevitably spills and it’s game over.

"Aha", I hear you say, "so it’s a run of the mill physics-based indie puzzle game affair!" and that is just about right. Play it alone or alongside a friend. Go at it in short bursts or take a crack at those elusive high score spots.

Here's what's included:

  • A single player experience.
  • Local multiplayer.
  • Power-ups to enhance your skills when the going gets tough and the levels get rougher.
  • The option to change the pieces from drab muted shapes to dreamy geometrical folk.
  • Versions for Windows, Linux, and Apple. *

Speed, difficulty, controls, sound and music are all customizable. By default:

  • the left and right arrow keys control the paddle in singleplayer.
  • player one controls their paddle with the same arrow keys in multiplayer, while player two uses the Z and X keys.

All downloads below are version 1.2 . In addition to some much needed bug fixes, this comes with a few quality of life improvements.

We want to continue improving the game, so if you have any ideas about what we can add or fix in future versions drop us a line.

Times are hard, so you don’t have to worry about paying for the game if you're tight on cash. Just download it and have fun, maybe share it with a friend and get the word out there.

* See this section on compatibility and troubleshooting.

PlatformsWindows, macOS, Linux
Rated 3.0 out of 5 stars
(1 total ratings)
AuthorMechanical Ink
Tags2D, blocks, Casual, Colorful, Feel Good, Local multiplayer, Physics, reaction
Average sessionA few minutes
InputsKeyboard, Mouse
AccessibilityColor-blind friendly, Configurable controls, High-contrast
MultiplayerLocal multiplayer
Player count1 - 2


Download NowName your own price

Click download now to get access to the following files:

Reaction Windows 13 MB
Reaction Linux 13 MB
Reaction macOS 19 MB


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Salut mes petits agneaux ! Cette fois-ci, c’est du sérieux ! Vous aurez pour mission de trier un maximum de formes différentes pour ne pas vous retrouver submergés ! Au menu vous aurez : du triangle, du carré, de l’hexagone, du ennéagone, vous aurez de tout pour bien vous ennuyer, et pour ce faire, vous aurez votre fidèle pagaie ! En la tournant par la droite ou par la gauche, vous devrez évacuer les formes pour ne pas vous retrouver dans une situation impossible ! Vous pourrez, dans ce jeu, hommage à Tetris et d’autres puzzle game du genre, jouer seul ou à plusieurs en local ! Le gameplay simpliste, cette possibilité de pouvoir jouer sans avoir besoin d’internet, comme les anciens jeux, une bonne vibe retro, et la possibilité de donner ce que l’on veut pour soutenir les devs du jeu, c’est une sorte d’invitation en enfance, pour les plus anciens, et une bonne petite expériences pour les plus jeune ! Dans la vidéo, vous aurez une intervention de Ioni, dev du jeu, expliquant comment le jeu a été pensé ! Pour tout le reste, vous pouvez envoyer plein de courage pour montrer à quel point le jeu peut vous intéresser ! Il est disponible sur Itch.io !

 C’était Ookamiette, Qui va compter les angles


Hey there Mechanical Ink, I have here below your gameplay review YouTube video! I hope this will give some boost to your game page and helps with updating it as well. I would be glad if you could help me out by subscribing to my YouTube channel! It does help out to keep me doing these reviews here. Here are some notes as well:

  • The game is simple and engaging and it even got leaderboards! Awesome!
  • There has been a side issue from using the power-ups where in the video after 5 minutes you will see that one of the pieces went out and that caused me to lose! This might be a common side issue for using those power-ups! (I was doing great and this might seem unfair to some players too when using power-ups).
  • It will be great if you add other music, especially the dramatic ones while playing.

The video contains more info and more reviews! I hope my reaction to your Reaction was good ;) I wish all the best for your game.