Any mangas where there is time travel? or anything that deals with games?

My manga : Time Travel
http://www.mangago.me/people/tag/2337/Time+Travel/

time travel yaoi:
http://www.mangago.me/read-manga/itsuka_koi_ga_kanau_made/
http://www.mangago.me/read-manga/not_equal/
http://www.mangago.me/read-manga/second_love/

time travel shoujo & josei:
http://www.mangago.me/read-manga/the_country_is_saved/
http://www.mangago.me/read-manga/sarasah/
http://www.mangago.me/read-manga/akai_houseki_no_himitsu/
http://www.mangago.me/read-manga/omoide_konpeitou/
http://www.mangago.me/read-manga/nise_no_chigiri/
http://www.mangago.me/read-manga/p_angel/

I read this a very long long time ago but it's really good
http://www.mangago.me/read-manga/crazy_girl_shin_bia/

http://www.mangago.me/read-manga/free_dj_sonogo_no_orera/
http://www.mangago.me/read-manga/ao_no_exorcist_dj_dogra/
http://www.mangago.me/read-manga/ao_no_exorcist_dj_fill_kill_reverse_my_moment/