If you’re a person who could play a tower defense game for hours, imagine a pretty cool one with a variety of armored, quick, numerous, and boss creeps. Then add to that the potential for upgrades between levels. Then add to that a system in which combining weapons creates special attacks like splash, chain, slow, multi-hit, and stun. Then add to that the potential for unlocking extra levels when you score certain point totals. Then add to that epic levels that end with monstrous, hard-to-bring-down bosses. Then add to that a desperation move in which cannons can become bombs. Then add to that seemingly endless levels.
Yeah. I had to put myself on an online games fast today.