This is a tough one for me. My policies/plans usually change depending on what I feel like lol. I love all the systems I have, but right now most of my policies are collecting exclusives first. Well here is what my policies are now:
* NES- I know I have no chance in getting this collection to 100%. First I want to collect games I have played as a kid. Then maybe start trying to collect it. Not my top priority right now.
* SNES- I am sort of following the same policy here as the NES right now. It may change.
* Sega Genesis (Mega Drive) - Lately, this one has been in the way back list of my priorities. I love the Genesis, but there are only a few games left for me to find that I have played as a kid. Not really interested in 100% this collection.
*Sega CD- This one right now I am attempting to 100% collect. Yes....I know....I'm lame lol. Every time I go to a flea market, retro game store, or garage sales, I tend to look for these.
* 3DO- I am just starting with this collection, but I also look for these games as often as I can.
* CD-i - I just started this collection as I got the CD-i as a gift for Christmas. Right now I am just collecting games that interest me. May work on 100% though I know it will put a hole in my wallet.
* Sega Saturn - Also just started with this collection. Only working on interesting games right now.
* Dreamcast - I really enjoy most of the games on this system. I may try to complete it. However it is another collection I just started on. I am happy to say though I just recently bought a few of them recently at a Con I went to.
* PS1 - My PS1 collection is mostly games I like to play. Not really in my priorities, but I will tend to pick some up for the right price.
* Xbox - Right now I am only focusing on exclusives.
* Gamecube- Exclusives only at this point.
* Wii - Exclusives
*Wii U - Exclusives
*PS2 - My favorite system. 100% this collection is the top of my list. No where near close to it though....
*PS3 - Exclusives only.
*Xbox 360- Various games as of right now. I don't really have a rule/policy. If there is a game I want, I normally get the 360 version.
* Gameboy - If I find any for a decent price, I normally pick a couple up.
*Gameboy Advance - Exclusives
* PSP- Exclusives only. I have no interest of completing this collection.
*DS - Exclusives as of now.
*3DS - Exclusives
*Game Gear - I very rarely pick anything up for this system. I mostly get them from garage/yard sales here and there.
I think I got all the systems I have. Though these lists of priorities might change over time.