Valhall 2000 - Google Play

Valhall (Or Valhalla in English) is where Vikings used to go when they died in battle, to be reborn for fighting in the afterlife every night, and to feast with beautiful women. Jump into the future and we're all in Valhall in our computers respawning over and over again, hence the name Valhall 2000!

Get ready for multiplayer retro style 2D platformer gameplay! Challenge your friends and enemies to endless battles now! This game lets you invite your foes to fight head to head in a 2D platformer style shooter. Pick up an AK47 or a Rocket Launcher and blast them all!

Available on all operating systems on desktop computers, and also Android and iOS, so it is perfect to play when you have friends over who all didn't bring their laptops.

There are both fighting based maps, racing and climbing maps where you collect coins and kill enemies, and pure zombie maps. For Adventure and Zombie you can cooperate to get the best possible high score.

It is also possible to make your own maps using the Open Source Map Editor "Tiled", although it is only available on a desktop computer.

You can either play on the internet where you can join online games, or host your own game so that others can join, or simply play on local area network if your friends (or enemies!) are on the same WiFi.

Protip: You can very easily make a WiFi with your phone if you don't have one around so that you can play with your friends at the same location with minimal lag! It's called a Wireless Hotspot. That way, your phone acts like a wireless router, and the people around you can connect to you as a normal WiFi network. It is advised that you turn off your data if you don't have unlimited, because everyone connecting to you will be able to use your data all up.

Troubleshooting:
While the game will still function perfectly, there is a problem with the networking code for Android versions 5 and 6 including all minor versions, which may make the time to connect take longer than normal.