If I were trying to hide my position I wouldn't be posting.I think you just gave away your whole position.

I mean 'alike'. Or 'resembling'.The next question is, define exactly what you mean by "similar".
A lot of games are similar enough to D&D to be consider D&D: Palladium Fantasy, Empire of the Petal Throne, Tunnels and Trolls, more recently, 3e and 4e...A lot of people do not think that 4E is similar enough to previous editions of D&D to be called "D&D".
See above. I think a lot of games are effectively D&D. Conversely, I've seen D&D played in such wildly different ways, it's hard to see how some of those campaigns were the same game, even though they ostensibly shared the same rules, more-or-less. I think the line between what is or isn't D&D is blurry, and I'm not sure anything is gained trying to make it clearer.So now you have to tell us what you mean by similar and how many points of similarity you require...
A Pokemon RPG is more similar to D&D than the Pokemon CCG or Monopoly.Instead of putting the D&D label on the Pokemon card game, imagine if they put it on that little Pokemon role playing game...
Yes, you can play a Pokemon RPG like D&D. Had Pokemon existed back then, I'm sure gamers would have run Pokemon-influenced games using OD&D and/or 1e --god knows everything else made it into people's campaigns back then.It's basically a bildungsroman / coming of age story about a youthful adventurer seeking his fortune and interacting with monsters and other adventurers. Monsters have a suite of powers to choose from, and there are different configurations of powers, some of which trump others. There are hit points and attacks and an IGO/UGO turn structure. You could talk about a lot of similarities.
So 3e isn't D&D either? What about 2e, it had NWP's. Wait, didn't the Wilderness Survival Guide too? And 1e OA?Myself, I think 4E approaches gameplay so differently (roll, roll, roll your skill)...
From 1e on D&D has been about fantasy superheroes. Unless your PC doesn't advance past 5th level....and is thematically so divorced (Fantasy Superheroes vs. hardscrabble mercenaries) from the original that they are two different games.
Also, not everyone played the earlier editions the same way. We were heroes from the start in all the 1e campaigns my old college friend ran. You're overgeneralizing the whole 'hardscrabble mercenaries' thing... besides, how can that be the defining characteristic of prior edition play when, even in those editions characters became too powerful to be plausible HSM's after a handful of levels?
You're basically stating that D&D is no longer D&D after level 5 (or 7).
That's wonderful, BTW."D&D Presents: Crouching Naruto Hidden Deedlit" or whatever.