Originally released in arcades in 2008 and on home consoles in 2009, BlazBlue: Calamity Trigger is the first BlazBlue game in the series. At the time, it was considered to be a "spiritual successor" to the Guilty Gear franchise, while also aiming to help reduce the barriers of entry to the fighting game genre with generous buffer systems and moveset design, many systems of which can still be found in future BlazBlue games and numerous other fighters today.
This game is what many of the mainline FGC consider to be "Kusoge From the Japanese "クソゲー", meaning "shitty game"Kusoge are games which are highly broken in the literal sense. Kusoge often function poorly, and lack polish, and usually have extreme mechanics/balance. Kusoge is both a term of endearment and an insult, depending on the context.". It is probably the most tame of early Team Blue's very "special" social experiment games, but it still very much earns its title. It has a lot of weakly-implemented system and self-mechanics that lead to heavy character abuses and inabilities to overcome abuse, while also making the game a pain to play in general. Calamity Trigger is undoubtedly a game with many flaws, but it can be appreciated for its flaws, rather than in spite of them.

All Unlimited versions are unlocked by beating Arcade Mode with said Character. Unlimited Characters can be fought in certain routes in Story Mode too.
Hakumen and Nu-13 need to be unlocked via code in the arcade version. Refer to this page on how to do so.

-1000 LP
- Arc System Works
- Aksys Games
- Arcade
: November 19, 2008
- PS3/X360
: June 25, 2009
- PS3/X360
: June 30, 2009
- PSP
: February 25, 2010
- PSP
: March 9, 2010
- PC
: August 26, 2010
- PC
: September 2, 2010
- Steam
: February 13, 2014