Yes, Pokémon Platinum was created to be a Nintendo DS game so it can be played on all of the Nintendo DS systems which includes the original Nintendo DS, the Nintendo DS Lite, the Nintendo DSi, the Nintendo DSi XL, the Nintendo 3DS and the upcoming Nintendo 3DS XL.
No, you need a 3DS at least.
As of February 2014, there are 7 versions of the DS. DS and DS lite DSi and DSi XL 3DS, 3DS XL and 2DS
You can't 'add/download' games to the DS lite.
There is no such thing as a 'DS lite' game. If it's a Nintendo DS game, it works on any model.
No, it is a 3DS game.
No, 3DS games can only be played on a 3DS.
No, it is a 3DS game and only works on the 3DS.
No the 3DS game cards are shaped slightly different then the Nintendo Ds. Of course if you could put the 3DS game cards in the Ds lite it would still not work because the features and intense graphics the nintendo 3DS requires for games can't be used on the Ds lite. Don't buy 3DS games for the Ds lite as it just won't work. You can consider buying a 3DS however as the 3DS is backwards compatible with all DS games.
The DS lite is almost exactly the same size as the 3DS.
No, it is a 3DS game, so you need a 3DS.
No, the Nintendo DS lite cannot play 3DS games.
No
Your game, Pokemon HeartGold, might not play on your 3DS and DS Lite when the game was playable before because you have damaged the disk or cartridge.
The dsi can play any ds or ds lite games, however 3ds's are the only game systems that 3ds games work in.
Yes it is a Smaller Version of the original Nintendo DS the only other DS that is a totally new ds is the 3ds although Dsi supports dsi titles that the original and lite versions do not but the 3ds supports all of them. You can also play ds Games on a 3ds but you cannot play gameboy advanced games on a 3ds whereas on normal or lite ds you can play Game Boy advanced games.
It is a DSi-enhanced game which plays normally on the DS and DS lite, as well as with additional features when played on the DSi and 3DS, and their XL versions.