Action RPGS: Hardcore mode on whatever game that has a point in playing HC on. Path of Exile is a great example of a game that's really great to play in Hardcore because players can figure out a build that would be what I would like to call "Hardcore+Endgame" Viable. These are builds that are characterized by efficient leveling processes, easy gear requirements, extremely strong and balanced damage output, and enough measures for survival such as skills to aid in mobility and defensive skills that complement offensive prowess. Playing Hardcore on an ARPG gives that same feeling as that of playing a Nuzlocke. We create a character, name it to develop a bond, kill, farm, and battle, and avoid the pain of death.
Pokemon games: SET. That's basically it. I've mentioned this way too much in previous threads. Set is really the way to go in playing the games if people really want a noticeably different experience especially when fighting against the final challenges of the games (Elite Four + Champion, or in BW's cases, E4 and the main antagonists) all while making sure that the levels on my party do not vastly outlevel the bosses. Oh how I wish that the next pokemon games would have a level scaling mechanic on the gym leaders and E4 to Champion/Main boss/Ghetsis successor.
League of Legends: Playing off-meta picks that make sense or in a bigger sense, looking for as many viable junglers as possible. As of the current season, I play Jungle Jax very often and people often tell me to not play him as a Jungler or if I'm playing Jax better go to top lane instead. Screw that. I have enough game knowledge to let people know that Jungle Jax works really well especially for Yoloque. I even played Jungle Lulu at one time and I thought to myself, oh wow, this shit works with a good leash. Supportive utility? Magic Damage with good lockdown? Jungle Lulu mates. Also playing mostly solo que to climb the ladder. Duo ques are fine but i find Solo que the most fun.
Contra and Metal Slug: No death runs. I've done a no death run on the very first Contra, and I've done also a NDR on the first Metal Slug game. Granted, they were played on emulators but I did my best to make sure that I don't abuse savestates and all that. If I died on a stage, I restart from scratch.
Time Crisis: No hit runs. Did it in TC2, arguably the easiest of the TC series.
Tekken: TOP PERCENTAGE MOKUJIN
Diablo 3: Start a new adventure on Torment 6. Lvl1 to 70. Hardcore