Zillion 3D is a standalone, free and highly challenging Wolfenstein 3D mod with characters from the anime Akai Koudan Zillion and pixel art graphics. There are two episodes with ten levels each.
Tag: 8-bit
Proto Cuckoo 64
The retro arcade puzzler Proto Cuckoo 64 is free for Windows, 100% free to keep, in a limited time giveaway offer! Enjoy, because Proto Cuckoo 64 can normally cost £1.99!