Here is another Ego Shooter port by A600: Heretic! Here is the readme for further details:

Heretic32 ported by A600 using chui’s SDL libraries Copy all files and folders included in the zip to /gpmm/ (use heretic+.fxe if you have a BLU+) Free wads for Heretic can be downloaded here: – Wads must be copied to gpmm/heretic.There are 8 levels of gamma correction and 10 levels of brightness. (Video options menu)The settings for the selector menu are stored in gpmm/heretic/cfg/wads.cfg. DON’T DELETE THIS FILE.The syntax is very easy:name displayed = commandline optionsFor example, the wads.cfg included:#Heretic wadsHeretic = A Dark Day in Hell = -file darkday.wadAbbey3 = -file abbey3.wadAsteriel = -file asteriel.wadBAB Heretic = -file babhtdm.wadCreatures of Light and Darkness = -file cold10.wadEnchanter = -file enchantr.wadFrags96 = -file frags96.wadHouse of Horror = -file horror.wadLHET = -file lhet400.wadThe Crypts = -file crypts.wad -warp 1 7You can choose the clockspeed with the command -gpspeed. Supported values are: 60 66 80 100 133 144 156 160 164 166. If you type a wrong value or don’t use it, the clockspeed is set to 133If the wads.cfg has only one entry, the menu isn’t displayed:#Heretic wadsHeretic = CONTROLS:[UP] Move Forward / Navigate Menu[SELECT]+[UP] Look Up[SELECT]+[RSHOULDER]+[UP] Fly Up[DOWN] Move Backward / Navigate Menu[SELECT]+[DOWN] Look Down[SELECT]+[RSHOULDER]+[DOWN] Fly Down[LEFT] Turn Left[SELECT]+[LEFT] Select Previous Weapon[SELECT]+[RSHOULDER]+[LEFT] Select Previous Inv. Item[RIGHT] Turn Right [SELECT]+[RIGHT] Select Next Weapon[SELECT]+[RSHOULDER]+[RIGHT] Select Next Inv. Item[A] Use Weapon / Select Menu Option / [Y][SELECT]+[A] Map Follow mode on/off[B] Use Object (doors, button,…) / Back to the prev menu[SELECT]+[B] Gamma Correction[START] Use Inv. Object / Select Menu Option / [ENTER] / [Y][SELECT]+[START] [ESCAPE][SELECT]+[RSHOULDER]+[START] Map[LSHOULDER] Turn always strafe on/off[SELECT]+[LSHOULDER] Turn always run on/off[SELECT]+[RSHOULDER]+[LSHOULDER] Look forward (center view)[RSHOULDER] Map-A600-