Even though a top 5 is very hard with so many memorable franchises over the years both current and dead/on hiatus. But here goes.

1. Final Fantasy
2. Metal gear solid
3. Silent Hill
4. Gran Turismo
5. Grand theft auto

1. Wild Arms
2. Suikoden
3. Atelier
4. Gears of War
5. Starcraft

In no particular order :

1. Fire Emblem
2. GTA
3. Ratchet and Clank
4. Ace Attorney
5. Zelda

1. Mega Man
2. Legend of Zelda
3. Castlevania
4. Super Mario
5. F-Zero

I love how you number them despite them being in no particular order xD

My list:

#1 Ratchet & Clank

#2 Sly Cooper (maybe because of nostalgia, but I don't care)

#3 The Elder Scrolls

#4 Crash Bandicoot (would be #3 if they were still made (properly))

#5 Ummmm...... I don't know.... I think I'll love Kingdom Hearts, but I haven't played them yet....

Kingdom Hearts
LittleBigPlanet
Resident Evil
Uncharted
Super Mario

There are plenty of others I have but I wasn't sure which ones to choose but I do love these franchises.

1. Super Mario

2. Metroid

3. Resident Evil

4. Castlevania

5. Zelda

1. Legend Of Zelda
2. Resident Evil
3. Tomb Raider
4. Silent Hill
5. Mario 3D/Metal Gear

1 - Suikoden
2 - Lunar
3 - Fire Emblem
4 - Wild Arms
5 - The Legend of Zelda

And 3 out of them have been dead for a long time now, excuse me while I go sulk in a corner.

1. The Legend of Zelda

2. Metroid

3. Mario Kart/Any 3D Mario Game

4. Resident Evil

5. Fire Emblem