10. Flash Element
Flash Element is probably the most easily recognisable TD game in this list as the genre has moved on a fair bit from the standard increasingly tougher enemies moving along a set path. But it does introduce a few elements of classic TD tactics, such as percentage based bonuses for gold unspent at the end of a round. This is a deceptively tough cookie to crack too and nicely eases you into the game where things’ll get tricky around level 17 or so.