A face-melting, pixel-pumping arcade shoot 'em up featuring awesome power-ups, epic boss battles and spectacular effects at a blistering 60fps. Blast into battle against giant space destroyers in Arcade Mode, tackle endless waves of enemies in Survival Mode and face off against epic level guardians in Boss Run mode.
FEATURES
Awesome power-ups and devastating weapon upgrades including the Astro Mace and Plasma Rifle
The ultimate high-score chasing arcade game, with online leaderboards and 3 difficulty modes
Become a decorated Hyper Sentinel pilot with 60 challenging medals to complete
12 electrifying levels featuring epic, multi-stage boss encounters
Multiple graphics options, including the nostalgia inducing Spectrum, C64 and CRT filters
Login or register at the official Steam Website and download Steam client
Install and start application, login with your Account name and Password
Click the Games Menu.
Choose Activate a Product on Steam...
Follow the onscreen instructions to complete the process
After the successful code verification, go to the "MY GAMES" tab and start downloading.
News & Updates
2026-04-21
From Wishlist to Courtroom: The Steam Lawsuits Explained
There have been numerous Steam court case lawsuits throughout the years and ever since the start of the year they have made the pile even bigger! We decided to check out some of the latest accusations against the popular gaming platform as well as go through some of the previous cases that caused a stir of Valve legal issues in the past! Gabe Newell and Valve have definitely not been strangers to the court system…
As you probably know, in a huge variety of game titles there are usually a lot of mainline task objectives, but very often there are multiple side quests that would advance you further in the gameplay. This is exactly why we decided to run a Side Quest promotion on our YUPLAY site. In order to participate in it you have to make an order over 20€ between 17.04.2026 18:10 CET and 20.04.2026 02:00 CET, and you will get a 1€ voucher for next purchase…