1/3: Super Mario Bros 2: Lost Levels (Luigi Run) (3DS VC/NES)
1/4: Super Mario Bros. (Wii / All-Stars)
1/15: Super Mario Galaxy 2 (Wii)
1/20: Super Mario Kart 8 (WiiU)
1/28: Super Mario 3D World (WiiU)
2/15: Luigi's Mansion 2: Dark Moon (3DS)
2/15: Super Mario Land (3DS VC/GB)
2/16: Super Mario Land 2: 6 Golden Coins (3DS VC/GB)
3/3: Super Mario Land 3: Wario Land (3DS VC/GB)
3/13: Dragon Ball Xenoverse (PS4)
3/23: Metroid Prime (Wii)
4/18: Metroid Prime 2: Echoes (Wii)
5/3: Metroid Prime 3: Corruption (Wii)
5/10: Donkey Kong Country (WiiU VC/SNES)
5/16: Teenage Mutant Ninja Turtles: Hyper Stone Heist (GEN)
5/23: Mario Party 10 (WiiU)
5/25: New Super Mario Bros 2 (3DS)
This run of New Super Mario Bros 2 is the closest I've come to 100%ing a Mario Game. I managed to get enough star coins to unlock and finish Star World and made it through all of the worlds, including the hidden ones. Coin rushed a lot, too.
This game is both one of my favorite platformers of all time and also one of the most disappointing Mario games I have ever played. In terms of level design and fun factor, this game is absolutely perfect. It seems to get overlooked a lot but I think that is a mistake. Each level seems to have been built around the player needing to totally utilize all of the abilities available in that zone to unlock everything. There is an assumption that the player will want to find the star coins and as long as the player tries to explore, they are going to have a great time.
The disappointment comes in the end game and the post game content. There simply isn't enough and the difficulty seems to critically ramp down the closer you get to the final boss. The extra final boss in Star World should have been an epic battle but it felt like the original final boss with a 1% difficulty boost. The core game was good enough that I wanted more and the lack of more colored the final experience.
But hey, a game that is great 95% of the time is still a great game.