Danmaku Unlimited 2 is a bullet hell shoot'em-up, which means the game is less about spectacular explosions and quick reflexes but more about weaving your way methodologically through various torrents of bullets the enemies toss at you. To delve into pseudo-philosophical babble, the game is like staying calm and steadily making your way amidst "chaos" - which never is real chaos but a proper pattern. While the ship mode is large, only the small hitbox ("core") must avoid being hit by the bullets.
For danmaku veterans, this game is a rather welcome addition to Steam's library. Its visuals are clear and the supported resolutions include 1920x1080 (apparently the largest), although the in-game ship models aren't anything to write home about, somehow reminding me of the ones in Tumiki Fighters/Blastworks. Controlwise, at least XBox360 controller works without any configuring and the buttons can be rebound.
As an absolute must for this type of game, it has online leaderboards on Steam for each game mode and difficulty level separately.
Let's compare this with the eXceed series games, especially 1 and 3. For one, the graphics do not include pretty girls at all. Plot? There is no apparent plot. There are no bombs either: there is the "trance" mode, which increases (or multiplies) the score multiplier for a moment and allows the player to rake in much higher score, and a forward-facing cannon that can also destroy bullets and increase the multiplier. There is no autobombing option.
A feature brought over from other game genres is that while there are no collectible powerups that I have seen, playing the game will increase your rank and reward you with additional customization points to be allotted at the start of the game to, say, the number of continues, shields, lives, weapon levels and so on. Career progression ahoy!
Speaking of shields and lives - dying will reset the multiplier, as will changing the level, but getting hit so that the shield absorbs the bullet will only decrease it.
There is no "slow" or focus mode either: the ship moves always at the same speed.
There are four game modes (incl. free play and boss rush) and four difficulty levels.
Unfortunately, the music is a bit lackluster and apparently cannot be changed - I would've liked to replace them with some other tracks, but alas, no such luck.
The biggest problem I see with the game is that it lacks 'soul', so to speak. It's almost on the same level as Kenta Cho's abstract shmups, and just aiming for a high score is not necessarily enough justification for people to clear the game even the first time. The enemy ships being rather bland also doesn't help the situation.
Even so, this is a fun danmaku and worth the price of purchase.