Fort Yetisburg is the fifth level of Battle of the Brains, a Keen 5 mod by Ceilick. Here Keen travels to the ice planet of Frosthool in order to open one of the four security doors blocking the fifth teleporter. As the name of the level suggests, it is one big fort, the structures consist of giant ice blocks with snowy slopes and ice stalagmites making up the level. Keen's main enemies here are the Yeti, snowmen that can stun Keen with snowballs, and the Bedhed, a snowy looking creature who takes brief naps and then attacks intruders who get too close and disturb his sleep. Strangely enough Shikadi Probes can also be encountered here. Princess Lindsey, one of Keen's friends can also be found in this level to give him important information to help him in his quest to defeat the Grand Intellect.
Items (v2 beta5)
There are a total of 62,300 points in the Fort. That means 37 Rocket Pops, 18 Juice Boxes, 2 Chocolates and 12 Corn Dogs, also 6 Frozen Yogurts, Sprinkle Pastries and Stacks O' Pancakes equally (3,700 + 3,600 + 1,000 + 6,000 + 6,000 + 12,000 + 30,000 = 62,300). There are 65 Orbs scattered around. Three 1-UPs may be collected as well - they're relatively easy to reach.