The Blue Flamingo

Nuuvem is offering The Blue Flamingo at 100% off right now. It's an arcade shooter from Might and Delight. What sets this one apart is that the graphics are almost entirely made from handcrafted miniatures, the setting was actually filmed on a 32-foot-long model track, and the explosions were filmed fireworks and the like. There's also an interesting system allowing you to spend some of your score on upgrades, or earn interest for not spending it, forcing you to find the proper balance between upgrades and skill.