c&c 4 ruined what was left of c&c (no tib? a unit limit? what is this, DoW? if i wanna play DoW, i play DoW: Dark Crusade).
new starcraft made kerrigan into a "your princess is in another castle"-char and raynor into a generic bad ass ladies man, tychus was the only one that actually asked some relevant questions and he was the bad guy?
the warcraft-series from wotlk onwards; sunwell was good, well, ulduar 25 and icecrown citadel 25 in hard mode actually was fun, but i hated the way in wich phasing and the dungeon finder split the community, new naxx was so bad, cleared it 2 weeks after the expansion launched in t6 with one item that gave me enough hit to reach hitcap, sart 3 drakes the week after that, the whole t9-content was useless padding.
deus ex: invisible war was just bad, we are lucky the new deus ex actually is a good game.