I can't remeber playing a top down scroller more fun and addictive.
The music is catchy and the graphics looks great. There's plenty of world's to visit, bonus levels, enemies to take on, and firepower to unleash.
During levels you have a lot of various main and secondary gun options to pick up. Between levels you'll be given the option to purchase ship and weapon upgrades. This adds a little extra strategy to the game, as well as adding some replay value.
With the high level of accomplishment you feel after boss battles, and the intense firefights in between, Tyrian is an addictive example of great arcade action.