| 101. | Portal 2 Tests: Above Aperture (2/3) | 62 | | Portal 2
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| 102. | Portal 2 Tests: Bridge Burning | 60 | | Portal 2
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| 103. | Portal 2 Tests: Broken Neurons (Co-op) | 59 | | Portal 2
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| 104. | Portal 2 Tests: Batcature Laboratories: Part 4 — The world is RULED BY CAT PEOPLE! | 58 | | Portal 2
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| 105. | Portal 2 Tests: Electrophobia (1/2) (Co-op) | 57 | | Portal 2
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| 106. | Portal 2 Tests: A Little Something | 56 | | Portal 2
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| 107. | Portal 2 Tests: The Winter Testing Initiative (2/2) | 56 | | Portal 2
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| 108. | Aperture Tag #10 (Portal 2 Mod) — The Citranium is a Lie | 52 | | Portal 2
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| 109. | Portal 2 Tests: Behind The Waterfall | 51 | | Portal 2
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| 110. | Portal 2 Tests: Uhh — Uhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh | 51 | | Portal 2
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| 111. | Aperture Tag #5 (Portal 2 Mod) — Kindergarten is in Session | 50 | | Portal 2
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| 112. | Portal 2 Tests: No Money For Chambers 2 — The Can of HARMONY | 49 | | Portal 2
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| 113. | Portal 2 Tests: Laser Logic | 49 | Vlog | Portal 2
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| 114. | Portal 2 Tests: Condemned Testing: Track #303 | 49 | | Portal 2
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| 115. | Portal 2 Tests: Dilapidation: Part 0 | 49 | | Portal 2
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| 116. | Portal 2 Tests: Flying Around | 48 | | Portal 2
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| 117. | Portal 2 Tests: Moonbase Luna-C (3/5) | 48 | | Portal 2
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| 118. | Portal 2 #4 — The Surprise | 47 | | Portal 2
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| 119. | Portal 2 Tests: Flinging with Funnels | 47 | | Portal 2
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| 120. | Portal 2 Tests: Moonbase Luna-C (4/5) | 46 | | Portal 2
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| 121. | Portal 2 Tests: Finite Duration — It Goes on FOREVER | 46 | | Portal 2
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| 122. | Portal 2 Tests: Dilapidation: Part 1 | 45 | | Portal 2
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| 123. | Aperture Tag #11 (Portal 2 Mod) — Wormhole | 45 | | Portal 2
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| 124. | Portal 2 Tests: Electrophobia (2/2) (Co-op) | 44 | | Portal 2
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| 125. | Aperture Tag #9 (Portal 2 Mod) — My Science! | 43 | | Portal 2
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| 126. | Portal 2 Tests: Sabrina's Gym — Pokémon Gym in Portal 2?! | 42 | | Portal 2
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| 127. | Portal 2 Tests: Overthinker | 39 | | Portal 2
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| 128. | Portal 2 Tests: Déjà vu | 39 | | Portal 2
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| 129. | Portal 2 Tests: Kilo-Infinity and BEYOND! | 39 | | Portal 2
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| 130. | Portal 2 Tests: Barriers | 38 | | Portal 2
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| 131. | Portal 2 Tests: Dilapidation: Part 5 | 34 | | Portal 2
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| 132. | Portal 2 Tests: Dilapidation: Part 6 | 33 | | Portal 2
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| 133. | Portal 2 Tests: {Moment}um | 32 | | Portal 2
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| 134. | Portal 2 Tests: Cave Johnson's Vents & Funnels — Is it turned on?? | 29 | | Portal 2
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| 135. | Portal 2 Tests: Dilapidation: Part 3 | 26 | | Portal 2
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| 136. | Portal 2 Tests: Dilapidation: Part 2 | 24 | | Portal 2
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