It pains me slightly to give this a negative review, but it just isn't quite good enough to justify the endorsement. It's not a bad game by any stretch, more mediocre than anything else - and it may appeal to big fans of the genre. I just wasn't particularly taken by it.
Although it's an iOS port, Tiny Troopers is far from poor and the dev deserves props for patching in some additional control options to overcome teething problems left over from the initial touch interface. A small thing, but always good to see. The game plays exactly as you think a casual topdown shooter would - you track through relatively simple missions with your squad, following along in a string ala Cannon Fodder. Unfortunately, the similarities pretty much end there.
There are quite a few missions in the game and trying to get three stars on all of them would be a reasonable challenge by the standards of an iOS game, even if they do get samey fairly swiftly. The zombie defense mode is also surprisingly fun for a little while. The graphics are cute and the humour is there, at the very least - the game seems reminiscent of the 3D Worms games in both senses.
Ultimately though, what's fun for an hour or two quickly gets stale - and that's why I can't recommend this game. Worth picking up on sale if you like the genre, but otherwise this one seems destined to clutter bundles. Tiny Troopers, I salute you for your efforts but I can't banish Cannon Fodder from my mind. Perhaps that's on me and I shouldn't be making so many comparisons, but that's just how I feel. It suffers the same fate as the numerous Lemmings clones have over the years - even today, they suffer by comparison to the original.