4 Player Reactor (Multiplayer) is a reaction based multiplayer game that costs $2.99 and has zero in app purchases.
Pro Enjoyable, reaction based gameplay
All of the minigames in 4 Player Reactor follow the same principle in that each player tries to have the fastest reaction, beating out all other players. mainly each player will be looking for something on screen, the first one to notice it needs to tap their corresponding corner of the device. While simple in design, the gameplay is enjoyable.