Mari0 is an upcoming side- scrolling platform game developed by German independent developer Maurice Guergens and published on his site Stabyourself. It mixes gameplay elements from Super Mario world and Valve's Portal series of games. Unlike other 2D sidescrollers, Mari0 has more of an adventure theme, focusing on exploration and puzzle solving rather than fighting or completing tasks. However, as the game progresses you'll find yourself wanting to take on bigger challenges such as fighting bosses and taking on bigger maps. For this reason, it's recommended that players progress through the game using only the "trial" version, which offers the first few levels and is a good way of getting a feel for the game.
In Mari0, you play as Diego, a young Spanish backpacker who wakes up in an abandoned house one morning. You're immediately in need of food and water as you have no idea of where you're at or how you got there. After doing some investigating in the local town square, you discover that the previous inhabitants have all gone, leaving behind some items that are worth having for later use. Among these items are three magical bookmarks that act as portals to another world called Mariupol. Once you return home, a mysterious stranger named Marullo greets you claiming to be a god who has temporarily left to scout the land for a worthy soul.
As you progress through the game you'll encounter various puzzles and combat situations requiring the use of your portal gun. The fighting and puzzles are what make Mari0 stand out as a unique title not found in the mainstream gaming market. A core game mechanic called Heat Seeking missiles allows you to heat up objects that you are standing on to move on a virtual map similar to the portals that you use in the core game. It can also be used to go back or forth between the different levels in the game.