Sullen is a fast-paced, challenging platformer set inside of a circle. Your ultimate goal is to survive all of the levels and defeat the sullen eye that relentlessly attacks you. You assume control of a small pentagon and must dodge, jump, and shoot your way to victory.

Features

• 5 difficult levels featuring 40 unique stages and 5 mini boss battles
  
• Fast-paced, exciting gameplay with unique mechanics
  
• Amazing electronic soundtrack featuring 12 songs
  
• Play in Normal or Endless mode
  
• Learn the patterns in Practice mode
  
• Minimalistic, colorful art style
  
• Full controller support

Gameplay

In order to beat a level, the player must make it through all the stages and the boss battle with just 3 lives. If you survive a stage for 30 seconds, you'll be advanced to the next one. Completing two stages will grant a checkpoint; if you die, you'll be sent back to the previous checkpoint. You're allowed to use checkpoints 4 times per attempt. Every stage is a different pattern that must be learned and overcome.