Word reactor is a word game with physics. connect falling blocks to form words and make them explode. reuse letters before they explode and score bonus points. you can also grab blocks and move them around or throw away. in challenge mode you will also encounter immovable blocks. but beware of the restless laser! click on a letter and drag to make words. be careful as all the letters which will get in the cursor's way while dragging will be added to the word. click on a block, so that letter isn't highlighted when you click, and drag to move it around. toss it out of game area to discard it. press p to pause the game. q to quit.