Tower is a prototype for a cancelled team-based third person shooter for Xbox 360 and PS3, that was in development by Grin, the team mostly known for such games as Bionic Commando Rearmed, Wanted: Weapons of Fate and the cancelled Final Fantasy Fortress. With its arcadey graphic and gameplay, Grin probably desired to create a simple but fun online multiplayer experience, possibly to publish it digitally on Xbox Live Arcade and Playstation Store.
As you can imagine from its title, Tower offered multiple-floors arenas with an interesting gameplay mechanic: players would have been able to freely move around all surfaces of the towers, walking on walls and ceilings. This would have created many different approaches to combat, as you and your enemies could shoot and run around from multiple places.
Not much more is known about this lost game. In the end the project was halted (along with their other canned games: Streets of Rage Reboot, Strider, Wanted 2) because of Grin’s financial difficulties that eventually bankrupted the company. In the gallery below you can find some screenshots and footage from an early build, preserved to remember its existence.