Less deaths? hahahaah
no.
http://www.mangago.me/read-manga/tenkuu_shinpan/
http://www.mangago.me/read-manga/real_account/
http://www.mangago.me/read-manga/real_account_ii/
http://www.mangago.me/read-manga/ou_sama_game_kigen/
http://www.mangago.me/read-manga/jinrou_game/
http://www.mangago.me/read-manga/darwins_game/
http://www.mangago.me/read-manga/kamisama_no_iutoori_fujimura_akeji/
Now that you mention it, I read far too much snuff.
As for "less deaths," can't help you there.
I recommend these in general:
http://www.mangago.me/read-manga/dragon_head/
http://www.mangago.me/read-manga/apocalypse_no_toride/
http://www.mangago.me/read-manga/gyo/
http://www.mangago.me/read-manga/mirai_nikki/
http://www.mangago.me/read-manga/alive_the_final_evolution/
http://www.mangago.me/read-manga/parasite/
http://www.mangago.me/read-manga/akira/
All relics of the days when I actually enjoyed what I read...it's all rather tedious now, no matter the content. Enjoy (or don't, as I don't give much of a damn either way)!
I forgot this one
http://www.mangago.me/read-manga/tomogui_kyoushitsu/
Survival/Psychological Game Manga with less deaths? Like Tomodachi Game.