Everyone talks about sealed copies of Super Mario Bros. selling for six figures. But the real money in retro gaming isn't at the top — it's in the mid-tier games that haven't been "discovered" yet by the mainstream collector market.

Here are 10 cartridges I think are criminally underpriced right now:

1. Earthbound (SNES) — Yes, it's already expensive. But compared to where sealed SNES RPGs are heading, loose carts at $200-300 are still a steal.

2. Mega Man X3 (SNES) — Low print run, high demand. CIB copies have quietly doubled in the last 18 months.

3. Panzer Dragoon Saga (Saturn) — The Saturn tax keeps this one suppressed. Once Saturn collecting goes mainstream, this is a $500+ game easy.

4. Little Samson (NES) — Already rare, but still findable at garage sales for people who know what to look for.

5. Castlevania: Bloodlines (Genesis) — The forgotten Castlevania. Genesis collecting is heating up fast.

6. Hagane (SNES) — Blockbuster exclusive, barely anyone knows about it. Insane action game.

7. Snatcher (Sega CD) — Kojima's masterpiece before Metal Gear Solid. Sega CD prices haven't caught up yet.

8. Gunstar Heroes (Genesis) — Treasure's best game. Still under $50 loose. That won't last.

9. Demon's Crest (SNES) — Sequel to Gargoyle's Quest. Gorgeous game, low awareness.

10. Radiant Silvergun (Saturn) — Import prices are actually dropping. Buy the dip.

I built PixelVault as a place where collectors can buy, sell, and trade these kinds of games with people who actually know what they're worth. No eBay fees, no scammers, just real collectors.

Join free — the vault is open.