This is Cyber Willy from 2012. The published physical cart version will be renamed "Boss"
Twist'r-Shark is something both I and Scott Dayton (neotokeo2001) worked on for months 2 years later. Scott provided many sprites and collaborated on game design. Instead of a single boss we had unique bosses (the beginning giant shark is an example). Instead of a one boss shape we now had several different types INCLUDING companion huge enemies. The style and thickness of large enemy projectiles vary as well. Instead of a single fireball to avoid me and Scott included a variety of sprite based enemies, movement patterns and sizes. We even added bonus objects (the chickens).
The sole focus of Cyber Willy was one giant boss. So, yeah. "Boss" it is! It was/is a simpler game and the first time I delved into the boss rush genre. Over the course of two years I thought I could do better. Neotokeo2001 needed a Sharknado inspired game and I saw my chance to try again incorporating improved skills and ideas. Twist'r-Shark has a title screen with awesome effects and the helicopter animation is something I still find unique and rewarding.
Cyber Willy/Boss made me proud as I finished it in the last 2 days of a contest. It had one purpose: to pit the player against a single, large boss. Keeping that laser focus entertaining is something I still smile about.
Twist'r-Shark made me proud as I got to work with Scott Dayton on a intense arcade experience using his suggestions and sprite work. Multiple large enemies and a variety of smaller types keep you on your toes. Bonus objects add a risk/reward factor.
I can't agree using the playfield to create huge enemies makes this the same game. I used this technique for an earlier Neotokeo2001 game called Nitebear on Sleepystreet in 2010 (last boss). I used it again in Cyber Willy in 2012. I am making NO PROFIT out of this. Cyber Willy has been a free ROM download long before Twist'r-Shark. I gave Cyber Willy/ Boss to LudicrousDa3ve because he had a series of unexpected family related bills. Judge me for that.