Blasting from the past, here comes Jack from JanduSoft's arcade beat'em up/platformer Caveman Warriors!

A prehistoric caveman in feudal Japan? It's more likely than you think!

Use Jack's prehistoric might to break blocks while in Hyperactive Mode! Jack can also throw his stone axe, which may come in handy to defeat foes that stand either up or down from where you are.

You can also use Jack in Super Hyperactive Ninja's fight mode, to play against a friend!

Super Hyperactive Ninja is a fast-paced hyper-caffeinated action-platformer in 2D, designed with those who want a real tough challenge and speedrunners in mind.

Remember that on the occasion of the game’s announcement and until the game’s release, we have released a playable demo for PC and a speedrun contest alongside it. Top 100 best times will receive a free Steam key for the game*!

Just download the demo and complete the fifth level of the demo as fast as you can!

You can view the speedrunners ranking here:
http://www.jandusoft.com/shnranking
* Only one key per user. Will require a Twitter user handle to avoid duplicate entries and an e-mail address to send the key.