Sega's Japanese arm recently put up a very strange web app in celebration of Sonic's 20th anniversary, known as "Sonic ? Tweet" -- apparently the star is important. You can find it here -- though be warned, the site is entirely in Japanese.

Sega is referring to the app as a "game-included Twitter client," according to Sonic Wrecks and its Twitter follower "Santiago," who has taken the time to translate the Japanese.

The site offers a front-end for Twitter with a Sonic-themed collectible card game attached. The objective is to collect 500 cards featuring characters from Sonic's history. To do this, Sonic has to defeat Eggman. And to accomplish this, you have to make use of your very best Twitter wit.

Posting things to Twitter separates your tweet into words, which are then randomly selected, assigned points and then seemingly arbitrarily arranged into combos with other users' words. The higher the total score in the combo, the more powerful Sonic's attack. Words such as "20th" and "Sonic" appear to be worth more points.

Attacking Eggman and reducing his HP to 0 scores you a card as well as some experience points. Cards can be used to bypass a "cooldown" timer preventing you from attacking Eggman too often.

If you're able to read Japanese, Tails has a full explanation for you right here.

This article originally appeared on as Sonic Tweet