Talk:Laboratory/@comment-2.24.114.14-20130620113526

Please can you clarify if you need to complete and research all upgrades before you upgrade the building?

Have level 2 building and want to go to level 3 without researching these units at this stage, will the options still be there in the level 3 building and then what happens when get to level 4 building, do I need to have completed previous upgrades for that unit?

Thanks