Drop Free is described as 'In Drop Free you character keeps falling down and you must tap to jump and avoid all obstacles. Be careful, your goal is to dodge all rockets, bullets, spikes, cutters, cones, and cops along with many more obstacles'. There are four games similar to Drop Free for a variety of platforms, including Android, Linux, Mac, Windows and Android Tablet. The best alternative is Alex the Allegator, which is both free and Open Source. Other Drop Free like games are Super Meat Boy (Paid), Dodgy Wall (Free) and Ninja 314 (Free).
Alex the Allegator is a series of games that I, Johan Peitz, usually use for game coding challenges like Speedhack and Ludumdare. Whilst most of my games reside on Free Lunch Design, this is the place for the Alex' series and the even the source for these games. Let's go! Represent entire series of Alex the Allegator games including Alex the Allegator 1, 2, 3, and 4.
Super Meat Boy is a platform game developed by Team Meat and is the successor to Edmund McMillen's and Jonathan McEntee's flash game, Meat Boy, originally released on the Newgrounds website in October 2008.
Ninja 314 is a vertical platform game that requires ability and strategy to overcome obstacles and enemies. Grab the the walls, jump with precision and kill the enemies using special items, in order to reach the top of each stage.