Portal Companion Collection
The 
Portal Companion Collection is a bundle of both main games in the Portal Series available on the Nintendo Switch. It contains the following games:
It is developed by Valve, in conjunction with NVIDIA Lightspeed Studios, to be the official port of both Portal and Portal 2 to the Switch, proving that Source games can be run on the Switch.
However, while the main parts of both games are ported, there are some notable differences. For example, in Portal 2, the PTI, including Workshop support and custom chambers, has been stripped, along with Robot Enrichment, And the UI used in Portal are based of consoles version of The Orange Box UI rather than Steam Deck UI. Other than this, the games are identical to their PC and Nvidia Shield counterparts.