My first Pico-8 game...
I wanted to make an old-fashioned arcade shooter, like Defender but not as difficult to play.
The end result differs quite a bit from Defender - except for its difficulty level. ;)
Tip 1: Completely wipe out a cluster of aliens and you'll earn an extra life. Survival means earning lives faster than you lose them (and you will lose them very fast).
Tip 2: If you already have three lives, an extra life will power up your smartbomb meter instead. When it's full - BOOM! Humanity's future depends on you triggering as many smartbombs as you can.
Tip 3: Those speedy pink loner aliens? Hunt them down! They're the last of their cluster, so that's where your extra lives/smartbombs come from.