During TRON-Legacy we learn that Clu wanted to invade the real world with his army of programs to impose his order. We see him moving a large aircraft carrier style craft towards the portal, at which time Kevin and Sam realize he means to pilot the whole construct with the army through it.
Nice plan, but it seems to have a major flaw. The portal empties out into the basement of the arcade in a rather small room. How exactly did Clu plan to rememdy the issue of inadequate space within which to park his technological terror?