Thread:Petera275/@comment-69.235.86.231-20140328022727/@comment-3998509-20140331154312

A lot of concept work, including sketches and highpoly 3d models, for the later games, were done via a company called RedSteam. I found some personal websites of the artists, along  with unnofficial pages and deviantart pages with lots of stuff, some of which I've yet to upload (there are some quite cool red fury trooper designs). I'll try to find more links but just offhand here's a couple:

http://minikey.ivyro.net/xe/home/995

http://www.albihn.net/#nova-2

http://sobaku-chiuchiu.deviantart.com/art/NOVA3-redsteam-2d-chara-MC-body-377058104

http://shenggangdong.blogspot.co.uk/2012/07/nova3-character-from-redsteam-gameloft.html

So far, no sign of any new N.O.V.A. games, unfortunately.