Sonic Triple Trouble SMS is a fan-made Master System port of the original Sonic Triple Trouble, which was only released for the Game Gear and never got a Master System version. This port has been created by modifying the original Sonic the Hedgehog for the Sega Master System.
Die Hard 2: Die Harder is a cancelled Sega Master System game based on the movie of the same name. The game was developed by Tiertex and meant to be published by Grandslam in December 1991, however after not meeting the release cycle it was "indefinitely postponed" in mid-1992 because Sega had concerns with the quality of the game.
This game is a port of the popular mobile phone game, Flappy Bird. The game is fairly simple: You control a bird (or in this version, Opa-Opa) and tap the screen (press 1 or 2) to flap your wings and go up a bit, but gravity will quickly pull you back down. The aim of the game is to fly through the small openings in an endless stream of pipes without touching a pipe or the floor. Each set of pipes you pass gives you 1 point. The physics of the game makes it quite challenging, and it is fun to compete with others for the top score.