Basically, a while back I realized that I was getting too scatterbrained with my collecting. I've had basically anything I have any nostalgia for - playing, renting, borrowing, seeing in a magazine, etc - for years now. I've sought out lists to see what to buy, both "best of" lists and "worst of" lists (I'm looking at you, oldschool Seanbaby.com). And lately, I've just been kinda getting anything that was cheap and sounded fun (sometimes only one of those two qualifications)
But the happiest I was when I was collecting in recent memory was when I finished my Virtual Boy US set. A system that I don't even really have any nostalgia for, though I admit I do quite enjoy the system now that I have it. And I think it was because I could say I had
completed something and had everything (in some manner of speaking - yes there's homebrews and imports and NFRs, but still). And I really liked that feeling. Thought about trying to recreate it for the 32x or the Jaguar since they're small libraries too, but I don't have the love of those systems.
My #1 love, the thing that got me back into retro gaming around 2000, the thing that's always been my biggest collection (~1000 games total over ~25 systems and ~200 of them are for the NES) has
always been the NES. So I figure why not? Let's do this.
713 licensed games per Wikipedia (will update with something more accurate if I find it, but most stuff's blocked at my work). 113 unlicensed games (because I know me, I'll want those too - I already have a fair number, not just Tengen either). 826 games, not including pirates which I won't start down. With the roughly 200 I have, I'm at 1/4th of the way before I start. The good news is, the number of >$100 games on the NES is relatively low when you're looking cart only. There's still too many, but compared to SNES I'm good, it seems slightly past its peak prices.
My biggest regret is losing my copies of the Aladdin games at some point long ago when I was moving every year just out of college

But hey, I can track them down again!
Aaaaaaaaaaaaaaaaaaand GO!