Playground Global

Activity from announced rounds

All recorded activity

Playground Global is a deep-technology firm whose official portfolio identifies Infinimmune and PicoJool and which Mesa names as financing lead.

Recorded funding activity

Mesa develops miniature quantum sensors. PicoJool develops optical computing links, while RegCell develops reprogrammed immune-cell therapies. These investments concern different physical and biological systems.

Sources
Rounds participated in
8
Confirmed lead rounds
3
4 roles undisclosed
New companies
8
First participation on record · 0 follow-on
Funding in participating rounds
$217.2M
8 disclosed · full round size, not this investor’s share

By stage

Series A4
Seed3
Undisclosed1

By primary sector

Hardware3
Biotech2
AI1
Climate tech1
Healthtech1

By country

United States7
United Kingdom1

Rounds

8 in all activity
XRlabs

Surgical planning and operating-room software that combines patient anatomy with data from existing devices.

$8.4MSeed
Lead
Mesa Quantum

Mesa Quantum develops miniature quantum sensors for navigation, precision timing and synchronisation in demanding operating environments.

$11.8MUndisclosed
Lead
PicoJool

PicoJool develops optical chips and transceiver modules for high-bandwidth, low-power connections in AI data centres.

$27.5MSeries A
Participant
RegCell, Inc.

RegCell is developing cell therapies for autoimmune disease by epigenetically reprogramming pathogenic conventional T cells into stable regulatory T cells, aiming to restore immune tolerance without gene engineering; its platform is advancing toward clinical development.

$44MSeries A
Lead
Infinimmune

Develops human-derived antibody therapeutics for atopic dermatitis and inflammatory disease

$75MSeries A
Role not disclosed
Photon Queue

Develops high-efficiency quantum memories for next-generation quantum computing systems

$4MSeed
Role not disclosed
Unreasonable Labs

Builds an AI reasoning engine to generate scientific hypotheses across chemistry, materials science, and biology for industrial R&D

$13.5MSeed
Role not disclosed
Alva Energy

Developer of standardized upgrades that increase output from existing nuclear power plants.

$33MSeries A
Role not disclosed