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* From a Game Developer point of View*
* In Order of Importance *
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** As you'll read heres a summary **
** Learn the new PS3 hardware and improve all aspects of your current game. More Racers on track, AI, Collision/Physics, Environments. Then once your existing features are in good shape, Being with the new ones. **
1) -2 PLAYER MODE: should include being able to race any car from your garage, with any configuration... Nothing limiting "TIRES"... this is a common sense thing.
2) - LAN MODE: should act in the same constraints as 2-player mode. Meaning... Only accepting Dealer cars to race against other dealer cars in LAN mode is not acceptable. Poly: i've noticed a few of your game modes have taken a step backwards this is ofcourse detremental to keeping you guys leading the pack.
= These 2 were a step backwards =
3) #ofRaces == A.I.: Bad design decision here guys. Instead of beefing up the 1000 races that this game already holds. More time should of been spent into A.I., As in Having them avoid you instead of run into you. I understand this isnt really a problem until Collision is in. enuff said. Lower things to do, 50% of em arent even fun, its just too much.(Obviously theirs exclusions cause some hardcore people will argue)"ONE MAKE RACES" just overkill not needed.
4) PHYSICS + COLLISION: This ties into #3, Improvement in all areas, you know what you need to do. Its just a matter of time. "flipping cars?", with the PS3 you'll be able to model the undercarriage, rendering it out. Proably as well as the Engine components. WE WILL ALL WAIT, Just release a AAA Game title that went GOLD not Beta.
*NOTE: work with logitech, Creation of a better wheel and clutch included. The throttle isnt sensitive enough, IT should work in increments of 5% minimum. Just cause I take all TCS off doesnt mean i should spin tire by just touching the gas.
5) RENDERING: Use all the new bells and whistles.. Revamp your engine as you'll have to anyway. Multi-thread everything, Syncing threads with time stamps. Bump map, Dynamic lighting, I believe PS3 is using a Nvidia chipset, USE Cg: Programming language its fantastic and is a very good high-level language for programmable Vertex and Fragment Shaders!!!
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Everything above is CORE Game Re-Vamp.
That should all be done FIRST, and i'm sure most will be done regardless
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5) ONLINE MODE: quite obviously there is nothing else to be said here. Just make sure this mode is setup approprietly, put the time and money into design this architecutre right. This is very important and the entire online entity as a whole, needs to be near perfect if you really want to pull away from the competition. I.E. Restrictive races, Tournaments, possibly Ranking (if your supplying server space, meaning "Pay to Play") looking at GT4 i'd say running servers is your best bet until public technology is improved, meaning 'FIBER' is considered just a commodity not just a 'Wish N Wait'
* ALSO some people put this first, disregard that!! You need to fix your exsisting features before implementing NEW ONES.
6) RACES: Less is MORE, Different Types: Point to Point, Downhill - Uphill, Drift events where Style is worth more then Time. Weathered events. ENDURANCE EVENTS: Whats the point in doing a 24 hr race when its sunny the entire time. The thrill comes at driving through the elements, Rain,Night,Sun,WIND, etc... also 'B-SPEC' was a valuable option, good job not everyone wants to be bored with a 24hr daylight race where nothing is new.
7) CARS: well i'm kinda in the middle on this one.. You guys did license alot of manufacters, obviously the lamo/ferrai thats always cool. But dont build this game around the sheer # of cars, theres alot more then that.
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Those are all the main things: Here is just Suggestions, some are gonna seem outrageous. Which is fine

Food for the mind!
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- *Division of Home Garage: So the user can sort cars approprietly
- BIKES: MotoGP bikes ??
- DROPPABLE: Special Missions, One Make races, Possibly Trucks ?
- IMPROVE: RallY?? its always seemed as an add-on to the street game rather then a large component of the game. Force people to race rally when going through a season, So that we can learn all areas of your game.
- PROFILES: this is very simple as in reading in a saved file duh... But it leaves the oppurtunity, to keep track of stats, Not just 1-player stats, 2 Player stats aswell, and it also always for multiple garages on a memory card.
- RACES: Keep all old tracks, Add New ones.. DONE!
- 2PLAYER: Make all races "RACEABLE" in 2player geez.. you wont be able to blame the ps2 requirements anymore with the ps3!
- CARS: Keep cars you have, Add new ones the important ones, leave the worthless ones out. You determine what is what.