Tittle says it all I played many of them and I have to say the IAP is needed to win as it gets so hard to a point where you need them
EasyTech... Excellent graphics that tempt, and total crap gameplay. Bad localization (Engrish) and the newer ones also feature abusive IAP's. I have 3 or 4 of their games and I will never touch anything they make again. Ever.
Glory of generals pacific war their most recent game just came out Form what I can tell it exactly the same as glory of generals just with new levels, generals and a new unit. Could have easily been an update to glory of generals IMO.