When multi-ROM support is finally released for the Gateway 3DS, which games will you always have loaded onto your microSD? Also, if you haven't already gotten the 3DS ROM Tool, I highly recommend to download it, and to trim all of your ROMs. There isn't a single ROM currently available that I can't fit on a regular 4GB microSDHC card. My entire collection of close to 50 games takes up 36.9GB. Before trimming, it was well over 50GB. I am going to get a 32GB microSDHC card, and fill it with nothing but the best. Batman - Arkham Origins - Blackgate - 688MB Bravely Default - 3.23GB Disney Epic Micky - Power of Illusion - 278MB Fire Emblem - Awakening - 1.07GB Harvest Moon - A Tale of Two Towns - 256MB (must've forgotten to trim this one) Harvest Moon 3D - A New Beginning - 341MB Heroes of Ruin - 464MB Kid Icarus - 1.57GB Kingdom Hearts 3D - Dream Drop Distance - 1.78GB Luigi's Mansion - Dark Moon - 842MB Mario Kart 7 - 637MB Mario Tennis Open - 251MB Monster Hunter 3 Ultimate - 1.77GB Naruto Powerful Shippuden - 386MB New Super Mario Bros. 2 - 370MB Paper Mario - Sticker Star - 524MB Professor Layton and the Miracle Mask - 788MB Project X Zone - 465MB Resident Evil - The Mercenaries - 666MB Resident Evil - Revelations - 3.14GB Sims 3 Pets - 388MB Sonic - Lost World - 1.25GB Sonic Generations - 606MB Star Fox 64 3D - 575MB Super Mario 3D Land - 289MB Super Street Fighter IV 3D Edition - 1.64GB Tales of the Abyss - 1.54GB The Legend of Zelda- Ocarina of Time - 454MB The Legend of Zelda - Link Between Worlds - 679MB Theatrhythm Final Fantasy - 869MB Zero Escape - Virtue's Last Reward - 824MB All of this together comes in at 28.63GB, which should easily fit on any 32GB card. Check my file sizes against yours. You'll see why trimming is so critical.