Motocross Challenge is a Gameboy Advance ROM. In order to play it, you need a GBA emulator (there numerous emulators and website hosting them) or for best performances, use a flash card. We highly recommend the use of a controller since the game was designed with a GBA.
Tyrian is an arcade-style vertical scrolling shooter. The player controls a space ship fitted with different weapons and enhanced energy shields. Money is earned by destroying enemies and grabbing bonuses, which is then used to purchase upgrades such as weapons, shields, energy generators, and different ships from interlevel menus. The game is fast paced and presents a variety of enemies and bosses.