Please suggest some good 3-5 minute PC shmups

[Mischief Maker]

My schedule is tight these days, but I've been surprised how satisfiying an experience a well-made shmup designed to be done in less than 5 minutes can be. In some ways it's more fun because the designer doesn't have any time to screw around. Here's a list of some good 3-5 minute shmups I've found over the years (all available on Shoot the Core).

Sonic Ironstorm: Fatal Attack
Spirit Collect (3 minute Dodonpachi!)
Lunaria
rRootage

Let me know some other good ones I missed!

[Ed Oscuro]

emulate any Hudson made Caravan game via Magic Engine or whatever that other PCE emu is ;D

[Ixmucane]

Some games just let you play a single level out of many, either on its own or by saving and reloading between levels:

Tyrian/Tyrian 2000 (use DosBox)
Raptor (use DosBox)
Jets'n'Guns/Jets'n'Guns Gold
...thinking of it, most other PC-native western shooters of any age...

Raiden III
Bangai-O (emulated; some levels are quite long)

[Frederik]

Warning Forever, of course! It´s time-based anyways, and you can choose between several modes and even enter your preferred playtime as well.

[MX7]

nomltest